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Finding the Fourth Proportional to 72,466.66, 108,680.28 and 19,863.64

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Solution

The fourth proportional to 72,466.66, 108,680.28 and 19,863.64 is: 29,790.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,466.66 : 108,680.28 = 19,863.64 : x
  2. Step 2: Convert to fraction form
    72,466.66/108,680.28 = 19,863.64/x
  3. Step 3: Cross multiply
    72,466.66x = 108,680.28 × 19,863.64
  4. Step 4: Simplify right side
    72,466.66x = 2,158,785,957.02
  5. Step 5: Solve for x
    x = 2,158,785,957.02/72,466.66
  6. Step 6: Final answer
    x = 29,790.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.